Transcription of Chapter 9: Column Analysis and Design
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Chapter 9: Column Analysis and Design
Chapter 9: Column Analysis and Design Introduction columns are usually considered as vertical structural elements, but they can be positioned in any orientation ( diagonal and horizontal compression elements in a truss). columns are used as major elements in trusses, building frames, and sub-structure supports for bridges ( piers). columns support compressive loads from roofs, floors, or bridge decks. columns transmit the vertical forces to the foundations and into the subsoil. The work of a Column is simpler than the work of a beam. The loads applied to a Column are only axial loads. Loads on columns are typically applied at the ends of the member, producing axial compressive stresses.
The term “L/r” is known as the slenderness ratio. • A higher slenderness ratio means a lower critical stress that will cause buckling. • Conversely, a lower slenderness ratio results in a higher critical stress (but still within the elastic range of the material). Column sections with large r …
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